Before asking "why am I not selling", ask yourself the following questions:
1) Are my photos top notch?
2) Does my shop have a cohesive overall look? Are all my photos the same style?
3) Have I learned SEO (search engine optimization) and have I maximized it in my shop, so that I can be found in google searches?
4) Am I doing my best to promote outside of Zibbet? Have I tried using a blog, or Facebook, Twitter, Tumblr, Flickr, Wanelo, Squidoo, or any of the other promotional programs?
5) Have I identified specifically who is at the heart of my target market, so that I can maximize my ability to find ways to promote specifically to them?
6) Do I sell in person at craft fairs as a way to get my product seen?
7) Do I use pricing formulas to ensure that my pricing is accurate and consistent, and priced to retail?
These are all things you must do if you want to sell successfully online.